Double antibiotic after brain aneurysm surgery is only needed in the case of stent-assisted interventional embolization application, and is usually taken for about six months. Simply aneurysm interventional embolization surgery is not required to take double antibiotic after surgery. If stents are used in cerebral aneurysm interventional embolization, patients need to take double antibiotics after the operation. Generally, patients need to take double antibiotics for about six months after the operation, and in some cases, they need to take them for the rest of their lives. Patients should review the thromboelastography regularly and adjust the dose of double antibiotics according to the results. The commonly used double antibiotics in clinical practice are aspirin and clopidogrel. Both drugs are suitable for post-stenting patients without obvious contraindications. However, it should be noted that aspirin may cause gastrointestinal discomfort, so patients with acute gastrointestinal disorders should take it with caution. In addition, aspirin should be contraindicated in severe organ failure, and clopidogrel is contraindicated in patients with severe liver damage, peptic ulcer and intracranial hemorrhage. The drug should be used under the supervision of a doctor.